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(No Model.)

E. W. CARTER.

' PEROOLATOR.

No. 596,285. Patented Deo. 28, 1897.

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i EZRA W. CARTER, OF OOHOES, NEW YORK, ASSIGNOR OF ONE-HALF TO FRANK VERMILYEA, OF SAME PLACE.

PERCOLATO R. v

SPECIFICATION forming part of Letters Patent No. 596,285, dated December 28, 1897. Application filed December 4, 1896. Serial No. 614,430. (No model.)

To all whom t may concern.-

Beit known that I, EZRA W. CARTER, of Oohoes, in the county of Albany and State of New York, have invented new and useful Improvements in Apparatus for Pharmaceutical Purposes, of which the following is a specification. v f

My invention relates to improvements in apparatus for the use of pharmacists, druggists, and others engaged in preparing medicines; and it consists in combining in one device a percolator and altering apparatus so arranged that the two can be used independently, either simultaneously or at different times.

My invention also includes a novel arrangement and construction of the percolator wherein the vessel of the latter is provided with a removable cap, which forms an airtight joint with the upper end of the percolator, and connecting said cap with an aircompressing apparatus, the pipe which connects the percolator with the air-compressor being provided with suitable cocks or valves for governing the inflow of compressed. air to the percolator.

The object of my improvement is to facilitate the operation of the percolator and to obtain an increase in the quantity of percolate from a given quantity of drugs.

In the accompanying drawings, which form part of this specification and to which reference is made herein, Figure 1 is a perspective view of an apparatus which embodies my invention ;l and Fig. 2, a longitudinal section of a modified form of a bed-piece for my apparatus, in which the bed-piece forms a chamber for containing compressed air.

As represented in the drawings, A designates a bed-piece on which my apparatus is erected. Said bed-piece is preferably made of cast metal and can be made of any suitable size and form.

B isan air-compressing pump which is erected near one end of the bed-piece A. As shown in the drawings, said pump is of the kindusually employed for inflating the tubular tires of bicycles; but any other suitable style of air-compressing pump may be substituted therefor.

C is an air-pipe which forms a communicavtion between the air-compressing pump Band a tubular standard D, that is erected on said bed-piece, as shown in Fig. 1. Said air-pipe is indicated by dotted lines. In this form of my invention the tubular standard D is provided with an air-chamber E at its upper end, said air-chamber being'designed to contain a volu me of compressed air for immediate use, and near said air-chamber the tubular standard D is provided with a T-fitting, from which a branch pipe F leads to convey the compressed air into the percolator of my apparatus. A valve or stop-cock G should be arranged either in the tubular standard D or in the branch pipe, or in both of them, to control the flow of compressed air into the percolator.

II and I designate supporting-rings which are adj ustably attached to the tubular standard, so as to be secured at any required height and at any desirable angle in respect to each other, and it should be understood that while I have only shown two of said supportingrings in the drawings there may be any required number of said supporting-rings attached to the tubular standard D. The upper ring H is preferably reserved for holding a percolator, and the ring I may be used for holding an ordinary funnel-shaped filter, as indicated by .dotted lines in Fig. 1, or for any other use that it may be applied to. Said filter may be retained in its place in said ring and perform its function while the percolator is performingv its functions.

J is a percolator of the usual well-known form and size. Preferably said percolator is made of glass and it has at its upper end a screw-thread K or other suitable means for attaching a cap thereto. In Fig. 1 said screwthread is shown by breaking out a portion of the cap for said percolator.

L is a removable cap for the percolator J Said cap is preferably made of a suitable metal, and its lower end is provided with a screw-thread that is adapted to take on the screw-thread K,and a suitable packing should be interposed between said cap and the top of the percolator, so as to form an air-tight joint at that point. The cap L is provided with a nipple M for receiving one end of a flexible tube N, whose opposite end is con- ICO nected to the branch pipe F for the purpose of conveying compressed air into the percolator J, said flexible tube being employed for the purpose of affording facilities for allowing the percolator to be adj usted to a proper elevation on the standard D and for the removal of the cap L from the percolator J.

O is a receiver or receptacle in which the liquid percolate from the percolator J will be discharged as said percolate issues from the percolator. Said receiver is loosely placed on the bed-piece A directly under the discharge end of the percolator. It should be understood that as said receiver forms no part be substituted when preferred.

In the top of cap L a screw-plug P is i11- serted to form a closure for an opening formed in said cap, through which comminuted or powdered drugs and a menstruum therefor may be introduced into the percolator J.

In the modification of myinvention shown in Fig. 2 the bed-piece A is hollow and forms a compressed-air chamber E', that may be supplementary to the air-chamber E, (shown in Fig. 1,) or the latter may be dispensed with and the air-chamber E will be alone used for storing the compressed air. An air-compressing pump B is arranged to discharge its compressed air directly into the air-chamber E', and a tubular standard D is arranged to lead directly from said air-chamber.

My invention is operated in the following manner: The percolator J being charged with a required drug in a powdered or comminuted condition and with a proper menstruum, the air-chamber E or E containing a volume of compressed air of suitable pressure, the stopvalve Gr should be opened to allow the compressed air to iiow from said air-chamber into the percolator J. The pressure of the superincumbent compressed air will force the menstruum to flow quickly through the drugs contained in the percolator, and in its passage the menstruum will absorb the soluble properties of the drugs and leave the dregs in a more thoroughly exhausted condition than when the menstruum is left to operate by its own gravity.

By my pereolator the operation of percolation is effected in a more perfect manner in much less time than with the ordinary form of percolator. When considered necessary or desirable, the air-compressing pump may Vbe operated during the time that the percolator is performing its functions, and thereby the pressure in the percolator can be maintained. of my invention any other form of vessel may What I claim as my invention, and am desirous of securing by Letters Patent, is-- l. In an apparatus for pharmaceutical purposes, the combination, with an air compresser, a compressed-air chamber, a tubular standard which forms a communication between said air-compressor and air-chamber, and a filter adjustably attached to said standard, of a percolator adjustably attached to said standard and provided with a removable cap that forms an air-tight closure for the percolator, a stopcock leading from said tubular standard, and a tubular connection bewen said stop-cock and percolator, as speci- 2. The combination, with an air compressor, a compressed-air chamber, a tubular standard having an open communication with the air-compressor and air-chamber, and a stop-cock that governs the outfiow of compressed air from said air-chamber, of a percolator carried by thetubular standard, a removable cap that forms an air-tight closure for the upper end of the percolator, and a tubular connection between said cap and the stop-cock, as specified.

EZRA WV. CARTER.

Witnesses:

A. CRAIG, WM. A. BLYTH. 

